Chinese Vice Premier Sun Chunlan on Monday reiterated the country's adherence to the dynamic zero-COVID policy and called for efforts to consolidate hard-won achievements in fighting COVID-19.

Sun made the remarks at a teleconference of the State Council on COVID-19 response.

An outbreak should be stamped out as soon as it is detected to ensure the epidemic is manageable and controllable, said Sun.

She urged agility in epidemic monitoring and early warning, and stressed the availability of nucleic acid testing facility within 15 minutes' walk in big cities.

Highlighting preparedness in terms of quarantine centers and makeshift hospitals, Sun said such facilities must be built to a high standard so that they can be put into use within 24 hours when necessary.

Precautionary measures for COVID-19 should be part of the daily routine at construction sites, schools, nursing homes and old urban areas, among other places, Sun said, urging continuous efforts in promoting vaccination among senior residents and other vulnerable groups.

The Chinese mainland on Monday reported 349 confirmed local COVID-19 cases, of which 234 were in Shanghai, the National Health Commission said on Tuesday.

Apart from Shanghai, seven other provincial-level regions on the mainland saw new locally transmitted COVID-19 cases, including 61 in Beijing and 25 in central China's Henan Province.

Shanghai also reported 2,780 locally transmitted asymptomatic infections Monday, out of a total of 3,077 local asymptomatic carriers newly identified on the mainland.

Confirmed cases on the Chinese mainland now number 220,397, with the total death toll from COVID-19 at 5,191.

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(With input from Xinhua)